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US 11,340,438 B2Granted
Fiber splitter device for digital holographic imaging and interferometry and optical system comprising said fiber splitter device
AssigneeLyncee Tec S.A.
InventorsEtienne Cuche, Yves Emery
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Abstract
An optical fiber splitter device comprising at least two optical fibers of different lengths is disclosed for partial or complete compensation of the optical path difference between waves interfering to generate a hologram or an interferogram. Various implementations of this fiber splitter device are described in apparatuses for holographic and interferometric imaging of microscopic and larger samples.
Claims19
An optical system including:
- at least one fiber splitter device comprising a first optical fiber for propagating an electromagnetic wave to a first output fiber end, and a second optical fiber for propagating an electromagnetic wave to a second output fiber end;
- an optical device configured to generate an optical interference between (i) at least one object electromagnetic wave generated by interaction of an electromagnetic wave emitted from the first fiber output end with a sample, and (ii) at least one reference electromagnetic wave provided by the second fiber output end;
- wherein the first optical fiber and the second optical fiber have different fiber lengths;
- or the same fiber length where the first optical fiber includes a light propagating material having a different refractive index to that of a light propagating material of the second optical fiber.
1 more element
A holographic or interferometric device including:
- a fiber splitter comprising at least one input optical fiber, a first output optical fiber for propagating an electromagnetic wave to a first output fiber end, and a second output optical fiber for propagating an electromagnetic wave to a second output fiber end;
- wherein the first output optical fiber and the second output optical fiber have different fiber lengths;
- or the same fiber length where the first output optical fiber includes a light propagating material having a different refractive index to that of a light propagating material of the second output optical fiber.
Dependencies are inferred from the claim text.